Combined scraper, grader, leveller, etc.



May 18, 1948'. K. BARKER COMBINED SCRAPER, GRADER,'LEVELLER, ETC.

Filed Dec. 11, 1944 4 Sheets-Sheet 1 nneZ/Z Zak/sew" y 4 and v, z. #W

May 18, 1948. BARKER 2,441,744

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Filed Dec, 11, 1944 4 Sheets-Sheet 2 0 & 1 0

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Filed Dec. 11, 1944 4 Sheets-Sheet 3 mm. o

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Kenneth mm, Boise, Idaho Application December 11,1944, Serial No. 567,746

This invention relates to farm machinery and has for its object to provide a combined land provide evenly spread upon a desired surface, or dumped in a heap.

A further object of the invention is to' provide in a scraper mounted upon wheels means whereby the weight of the load may be carried on the ground by the scraper, or upon the wheels, depending upon the distance to be hauled.

Another object of the invention is to provide a scraper so constructed that it may cut its swath close to a fence line, ditch, bank or other obstacle.

A still further object of the invention is to provide a scraper of substantially cylindrical or drum form and means whereby it may be raised vertically in order to avoid obstacles in its path.

Another object of the invention is to provide a rotatable drum scraper and grader.

A primary object of the invention is to provide a simple, effective and comparatively inexpensive tractor drawn scraper, designed especially for farm use, as well as by others having need for a small scraper, grader and dirt carrying combination unit of a practical nature.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.

Figure 1 is a side elevational scraper.

Figure 2 is a top plan view thereof.

Figure 3 is a longitudinal sectional elevation thereof.

Figure 4 is a front elevational view of the machine.

Figure 5 is a rear elevation of the device.

Figure 6 is a view similar to Figure 3, partly broken away and shown in a changed position, and

Figure 7 is a sectional view taken at line 1-1 of Figure 1.

Figure 8 is a perspective view of the mechanism partly shown in Figure '7.

Like reference characters indicate like parts throughout the following specification and the various views in the drawings and in which: 10 indicates my scraping and grading machine as an'entirety and ii indicates a supporting frame 7 view of my 3 Claims. (01. 31-129) or chassis, at the rear ends l2 and I3 of which are provided U-bolts H and I! for the reduced ends ii of an axle ll upon which wheels II and I3 are mounted. The parallel angle iron members 20 and 2|, of the frame ii, are braced by a bar 22, just forward of the wheels. Another brace bar 23 connects the forward ends 24 and 25 of said members 20 and 2 I.

Located intermediate 01' the bars 22 and 22, and upon the members 20 and 2|, are bearings 28 and 21, in which are mounted stub shafts 28 and 29, attached to the center of side walls 30 and 3|, of a substantially cylindrical or drum shaped combined scraper and load carrier 32 which is rotatable upon said stub shafts. The cylindrical wall 33 of the drum 32 is provided with an opening or mouth 34. Below said opening said wall is flattened as indicated at 35 and the flattened portion carries on its outer side a longitudinal scraper blade 36, the cutting edge 31 of which extends somewhat beyond the lower lip or edge 38 of said fiat portion 35. A dog 33 is mounted upon the sidewall 30 of the drum and projects radially beyond the cylindrical wall 33. It is adapted to rest upon a catch mechanism, generally designated by 40. Said catch mechanism 40 consists of two arms (Figs. 7 and 8) mounted on a shaft 45. Between said arms a roller 44a is inserted carried by a bolt 43. On this roller 44a the dog 39 rests when the drum is in the position shown in Figs. 1 and 3. The catch mechanism is normally held toward the drum 32 by means of a spring ll, connected at one end to an eye 42 on the bearing 26. A stop did on the member 20 fixes the position of the arm 44 and of the mechanism. The shaft 45' is supported by bearings on the frame ends 24 and 25. A similar dog 46, catch mechanism 41 and spring 48, is provided at the opposite side of the drum. These dogs 33 and 46 hold the drum or pan 32 in scraping and filling position as shown in Figure 1 of the drawings. Another pair of dogs 49 and 50 is attached to the sidewalls of the drum and is adapted to hold the drum in upright position (with its mouth 34 raised as in Fig. 6) when engaged to the catch mechanisms 40 and 41, when it is desired to haul the load a considerable distance. A third pair of dogs BI and 52, attached to the drum in the same manner as the dogs above referred to, is adapted to engage said catch mechanism to hold the drum in a position in which it can spread the load over the ground. 1

Pivotally mounted on the bolts 53 and 54 on the members and It projecting up from an anchor member I on the frame member II is a catch bar ll formed of a pair of parallel bars 80 and II, connected at their free terminal by a catch 62 adapted to engage. one of the angle iron catch members 83 and 84 welded to the wall 33 in such spaced relation as to hold the drum 32, from reverse movement either when scraping, taking on a load or delivering the load. Fixedly mounted on the shaft 45', is a trip lever 65, which projects upwardly and passes between the members 60 and BI of the catch bar 58; it carries the roller 86, mounted beneath said members 60 and 6|, whereby. when the rope 61, secured in a bore 68 in the upper end of lever 65, is pulled the bar 59 will be raised and release catch 62, from the member 63 or 84, thus permitting the drum to rotate in reverse. gagement of the drum with the ground upon back up movement of a tractor to which the scraper is hitched.

Mounted under the forward end of the frame member 58, is a cylinder 10, in which is rotatably supported shank H, of a hitch 12. Secured to the rear end of the member 1!, is a collar '53, which bears against the rear edge of the cylinder 10, whereby the hitch is secured in place.

Adjustably attached to the member 51 by means of a U-bolt l5 fixed by nuts 92, is a depending leg 16, to the lower end of which is fixed a slide shoe 11, having its forward end 18, turned up to ride over obstacles. The primary purpose of this leg is to adjust the depth of the cut of the scraper blade. The depth of cut may also be adjusted through the raising or lowering of the hitch 72, on the draw bar of a tractor by which the scraper is drawn. The scraper drum 32 is provided with shoes 19, 80 and 8| for reinforcing the outer walls of the drum in order to avoid wearing of the wall when the drum has its mouth raised and is drawn upon the ground for a short haul.

It is to be noted that the retaining U-bolts l4 and i5, for the wheel axle H are attached to vertically disposed angle irons 82 and 83, secured to the frame ends l2 and i3, by welding or otherwise, the flange 84 and 85, of said irons being braced by members 86 and 81. The flanges 88 and 89 of said members 82 and 83 are each provided with a series of bores 90 and 9|, within any pair of which said U-bolts l4 and I5, may be secured in order to adjust the wheels to conform with the height of the draw bar of a tractor to which the machine is to be attached, this being in order that the hitch I2, may be raised high enough to raise the drum 32, from the ground when necessary to carry the load in the drum a considerable distance or when it is necessary to raise the drum over an obstacle. The hitch 12, may be raised by raising the draw bar of the tractor. In most types of tractors such as at present in use the draw bar is provided with means for raising it,

which in old constructions include chains or ropes.

and with more recent constructions include. a hydraulic or screw operated lifting means driven by a motor. This customary draw bar lifting mechanism of the tractor is used, in the present case, to lift the frame to the desired position.

In operation the hitch 12 is attached to a tractor draw bar (not shown) which permits vertical adjustment of the connection of said hitch. The hitch is swiveled in order to accommodate uneven movement of either the tractor or the scraper. In order to scrape the surface of the ground, the drum 32 is rotated to bring its flattened surface 35 and the scraper blade 38, upon the ground, at which time the dog 39 is in engagement with the Such reverse action results from en-.

roller a, which will prevent forward rotation of the drum and the catch 62 is in engagement with the catch member 83 on the drum, whereby it cannot rotate reversely, whereupon when the tractor moves forward the blade 38 cuts into the surface of the ground as indicated in Figures 1 and 3 of the drawings. As the tractor moves forward the upper surface ground is gradually forced into the drum until the same is filled or partially filled, whereupon by pulling on rope M, the lever 85 is drawn forward and the roller 66 raises the catch bar 69, releasing the catch M, permitting rearward rotation of the drum, whereby its mouth 34 will be brought to a raised position and the dog 49, pressing the catch mechanism 49 forwardly against the tension of spring ti permits the dog to rise above said catch mechanism iii; the drum is stopped from forward rotation and may be dragged forward on the ground for short hauls. In case of long hauls the tractor draw bar is lifted by the usual mechanism provided on the tractor for this purpose and the forward end of the frame is thus raised. This operation lifts the drum from the surface of the ground and throws the weight of the load upon the 'wheels l8 and i9. In order to dump the load the rope 8'! is drawn forward, rotating the shaft 55', releasing the member 40 from the member 69, permitting said member 49 through rotation of the drum to dig into the ground and rotate the drum forwardly a suiiicient distance to dump the load in a pile if desired to do so. However, if desired the tractor may move forward fast enough to permit the catch member 64 to be engaged by the catch 62, in order that the load may be gradually spread upon the ground as the tractor moves forward the drum mouth 34, being close to the ground thus preventing pile dumping. When the drum is in this latter position, the inclined blade edge 31 will be in a substantially vertical position, whereby said blade as the tractor still moves forward will level the surface of the ground.

In order to regulate the depth of the cutter blade into the ground, the shoe leg 16 may be raised or lowered through loosening of the nuts 92 of the U-bolt 15; after the adjustment is made said nuts are again tightened. Another means of adjusting the depth of the cut is through the connection of the hitch with the tractor draw bar.

One great advantage of my scraper is obtained by making the drum wider than span between the wheels, so that the scraper may operate close to fence lines, banks, etc. A further advantage of this arrangement is that the wheels move upon the scraped surface, therefore providing an even and level out of the scraper. Another advantage of my design is that the scraper may be backed by the tractor over ditches, holes or other places where it is not desired to move the tractor and the load dumped. It is of course obvious that the scraper blade can be removed for sharpening or renewing in case it becomes worn.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after co-n- 1. A combined scraper, load carrier and leveling as an axle for rocking said frame, means on the forward end of the frame to attach it to the draw bar of the tractor, a drum with an open mouth carried by and mounted for rotation on said frame in an intermediate position between the wheels and the forward end to be attached to the tractor, a scraper blade carried by said drum near said open mouth, stops for prevent-,

ing the rotation of the drum in a forward direction on said drum, a rockable spring pressed catch mechanism for cooperating with said stops, a rocking shaft mounted on said frame, hand operated means for rocking said shaft including an operating lever, stopsfor preventing the rotation of the drum in a backward direction, a catch'mechanism cooperating with said stops, said catch mechanism being brought into and out of engagement by the aforesaid lever mounted on the rocking shaft.

2. A combined scraper, load carrier and levelling machine, adapted for attachment to the liftable draw bar of a conventional tractor, comprising a liftable frame, a pair of wheels at its mounted on said 6 '3. A combined'scraper, load carrier and levellingmachine, adapted for attachment to the liftable draw bar of a conventional tractor, comprising ahftable frame, a pair of wheels at its rear end, an axle for said wheels simultaneously serving as an axle for rocking said frame, means on the forward end of the frame to attach it' to the draw, bar of the tracton'a drum, with an open mouth carried by and mounted for rotation on said frame in an intermediate position between the wheels and the forward end to be at tached to the tractor, a scraper blade carried by said drum near said open mouth, three stops drum, for holding the same in three different positions against rotation in one direction, one of said positions corresponding to a substantially horizontal scraping position of the scraper blade, another position corresponding to a dumping position of the drum, and a third position corresponding to a load spreading position of the drum and to a levelling vertical position of the scraper blade, a rockable, shaft on the frame, a catch mechanism mounted on said rockrear end, an axle for said wheels simultaneously serving as an axle for rocking said frame, means on the forward end of the frame to attach it to the draw bar of the tractor, a drum with an open mouth carried by and mounted for rotation on said frame in an intermediate position between .the wheels and the forward end to be attached to theltractor, a scraper-blade carried by said drum near said-open mouth, three stops mounted on said drum for preventing the rotation of the same in a forward direction in three different positions of the drum,

member adapted to prevent rotation of said stops in one direction but permitting rotation past-the catch mechanism in the other direction for changing the position of the drum, a rockable shaft for carrying said catch mechanism, a hand operated lever on said rockable shaft, means to operate said lever, stops on said drum for preventing the rotation of the drum in a backward direction, a catch for holding saidstops so as to prevent rotation of the drum, a rockable lever carrying said catch mounted on the frame, said lever crossing the aforesaid lever on the rockable shaft and meansincluding lifting stops for coupling said levers, so as to move the last named rcirctihdrnechanim when the rotatable shaft is same operated by a rockable spring pressed catch mechanism provided with a catch able shaft, spring operated means for holding said catch mechanism in operative stopping position relatively to the stops on the drum, adapted to permit passage of the stops in one direction, further stops on said drum for holding the same against rotation in a backward direction, a further catch' mechanism cooperating with said stops, including a rockable lever fulcrumed at the forward end of the frame, an operating lever on the rockable shaft, means for rocking the hand, means on said lastmentioned lever for lifting the first mentioned lever when operated to rockthe shaft, an adjustable foot member on the forward end of the frame,

for adjusting the scraping position, and means for adjusting said frame relatively to the wheels in a vertical direction.

KENNE'I'HBARKER.

REFERENCES CITED The following references are of record in the file of this patent:

v UNITED STATES PATENTS 22,148/29 Australia Aug. 31,- 1929 

